The Government Says

Revision of guidance for reducing the risk of vulnerable groups contracting listeriosis

Revision of guidance for reducing the risk of vulnerable groups contracting listeriosis
Local copy of reducing-the-risk-of-listeriosis-guidance.pdf

https://www.gov.uk/government/consultations/revision-of-guidance-for-reducing-the-risk-of-vulnerable-groups-contracting-listeriosis

seen at 09:32, 23 September in Policy papers and consultations.